Product Name
Permabond Anaerobic LH197 Gasketmaker Accordion Bottle
Brief Description
Permabond LH197 is a highly flexible, anaerobic gasket maker designed for creating "formed in situ" gaskets between metal surfaces. It cures in the absence of air when confined between close-fitting metal components, forming a durable, solvent-resistant seal. This product is particularly suited for applications requiring routine disassembly or sealing dissimilar metals.
Popular Applications & Uses
- Creating "formed in situ" gaskets between metal surfaces- Flange sealing applications- Sealing engine blocks, transmission housings, and differential covers- Gasketing for gearbox and engine castings- Sealing flexible metal machined assemblies- Can be used as a dressing for conventional pre-formed gaskets
Industries that Commonly Use It
- Automotive Service/Repair- General Manufacturing- Metal Fabrication- Transportation/Specialty Vehicle- Industrial Supply (as a product distributed to various industries)- Chemical Industry (as a chemical adhesive product)- Engineering Services (for design and application specification)
Special and Unique Features
- Highly flexible, ideal for dissimilar surfaces where thermal expansion/contraction is an issue- Easy to remove, suitable for gasketing applications requiring routine disassembly- Ideal for use on soft metal surfaces, such as certain aluminum alloys, which damage easily- Replaces all sizes of formed gaskets- Can be dismantled with normal tools- Cures in the absence of air when confined between close-fitting metal surfaces- Forms a strong, durable, solvent-resistant seal
Key Properties
- Chemical composition: Acrylic- Appearance: Green- Viscosity @ 25°C: 50,000 mPa.s (cP) at 2rpm; 20,500 mPa.s (cP) at 20rpm- Specific Gravity: 1.1- UV fluorescence: Yes- Temperature resistance: -55°C (-65°F) to higher temperatures for brief periods (e.g., paint baking, wave soldering)- Resistant to high temperatures, pressures, and vibrations- More resistant to chemicals and oils compared to silicone gasket makers
Surface Compatibility
- Designed for metal-to-metal applications- Suitable for use with non-ferrous metals- Works on aluminum, iron, steel, zinc, copper and its alloys, and stainless steel- Best results are obtained on clean, dry, and grease-free surfaces- Roughened surfaces (~25μm) generally provide higher bond strengths
Known backups / known substitutes
- Permabond A136 (Anaerobic Gasketmaker)- Loctite 5181 (Anaerobic Gasket Maker)- Other anaerobic gasket makers from brands like Permatex- Permabond A905 or ASC10 (activators to reduce cure time, especially on inactive surfaces)
Comparison Note
Permabond Anaerobic LH197 Gasketmaker is primarily designed for metal-to-metal bonding and sealing, curing in the absence of air to form a strong, durable, and chemical/oil-resistant seal. In contrast, silicone (RTV) gasket makers are typically more flexible, cure by evaporation, and are often used for sealing applications that require flexibility or can have larger gaps, such as valve covers and oil pans, and may be less resistant to certain chemicals and oils. Anaerobic gasket makers like LH197 are generally more suited for heavy-duty, close-fitting metal assemblies where a rigid, high-strength seal is required.
